Stochastic Conversational Workflows

Traditionally, user interfaces are a series of screens and forms for exchanging informations with the user. Most of the applications start with a main screen from which users can navigate using breadcrumbs, menus, buttons like back and forward. This paradigm remained almost unaltered with the coming of hypertext where one may jump from a page or dialog into another by visual links, that are immediately accessible.
Chatbots shift UX towards conversational hypertext that produces the appearance of having a conversation with the computer. People can interact naturally, and since everyone already knows at least one natural language, nobody needs any training for it.